Conrad f



45mm eijlm.

a. a CONRAD F. Mom, on KENTON, c1110.

Letters Patent No. 105,968, dated August 2, 187.0;

-IM1=RovnMnuT m THEMANUPAC'I'URE or PURE CARBONATE or Pot-ASH The Schedule referred to in these Letters Patent land making part of the same To all whom tt nmy concern: g Beit known that I, OONRADF. MoLL, of Kenton, in the county of Hardin and State of Ohio, have in-.

, vented a new and improved Process for Manufactnring Pure Oarbonate of Potash; and I do'hereby de-.

clare that the following is a full, clear,,and exact description thereof, which willenable others skilled'in the art to make and use the same. a

This invention relates to a new and useful improvement in aprocessformamlfacturiugp the granulated carbonate of potash, (more generally known in com- J merce 'as pearlaslu) and consists in the mode herein alter described whereby a pure article of granulated pearlash is producedready for use, ina much more expeditious manner than it has been heretofore. The pearlash of commerce is manufactured by leachingthe ashes and boiling down the alkali tofwhat is known as black-salts. The black salts are then fscortche'dfl or subjected to a high temperature in an'oven, after-which they are again leached, and then the alkali is :boiled down towhat isknown'as white i, salts) The white salts; are then subjected to a very high temperature-for four or six hours, when it is removedand c'ooledfand then packed for market. The article is still-so impure that when it goes into phate of potash. i a i I, My process commences withthe sco1'tchings,ob-

tained as above described, which I take from the oven and dissolve or leach, and allow to settle about one day, (or twenty-four hours,) after which I draw it 'oif into another vessel or'tank, andlet it remain again to settle for ahouttwenty-ibur hours. It is then drawn 'oflf into a heater and subjected to a boiling temperature for three orfour' hours, and then the'fire is removed, and it is allowed to settle for about twentyfour hours more, when it is drawn off into a cooler, where it i's allowed to-remain for a day or so;

v 'lhealkali is now again drawn ofl'dnto a kettle or pan, and boiled until it begins to granulate. The fire is now withdrawnjthe remaining heat, with constantstirring of the mass completes the process. The pearlash is placed in large boxes and stirred asitcools,

when it is packed for market. .-By repeatedly decanting the alkali, audsubjecting it to the action of, heat,

and allowing it to settle and precipitate all sediment,

a pure granulated pearlash is produced, readyf'or immediate use when purchased by the eonsumer.

Having thus described my invention,

I claim as new and desire to secure by Letters A Patent'- The above-described process for manufacturing granulated carbonate of potash or pearlash, snbstantially as set forth.

The above specification of -myinvention signed by me this 9th day of June, 1870.

Witnesses:

Geo. W. MABEE, ALEX. F. ROBERTS.

CONRAD F. MoL 

